natural reproduction

Reproductive Isolation - Reproductive isolation is the inability of members of different species to interbreed in nature..

Reproductive isolation is the inability of members of different species to interbreed in nature..

New individuals are produced from a single parent without the act of fusion of gametes. The new individuals so formed are generally identical to the parent plant, as only mitotic divisions take place during their development. Regeneration of new plants from portions of vegetative organs is very com..

>Fragmentation takes place in some lower plants and animals such as some worms. The mature organism breaks up into two or more pieces or fragments. The fragments then grow into complete organisms. Regeneration of new plants from the vegetative parts of the parent plant is called vegetative propagat..

Regeneration - Regeneration of new plants from the vegetative parts of the parent plant is called vegetative propagation or vegetative reproduction. Vegetative propagation is done with the help of vegetative parts such as roots, stem or leaves. These parts may also be variously modified f..

Parthenocarpy - In angiosperms, the fruits are usually formed after the process of fertilisation. In certain plants, however, the fruits are formed without the act of fertilisation. Such fruits are called parthenocarpic fruits and the phenomenon is known as parthenocarpy. Parthenocarpic fruits are ..

Impact of Misuse of Natural Resources - Natural resources characteristically exhibit two features. They are: 1) Physical limitations 2) Limitations of regeneration / production. Natural physical resources like geophysical, hydro-geological, edaphic, atmospheric resourc..

As science became a part of human life, the classification of living organisms had to undergo a thorough modification. The advent of the microscope in the 17 t h century opened up a new world of organisms that were hitherto unexplored; the world of micro organisms. It was hard to believe the vast d..

This is another deviation of reproductive strategy in which an unfertilised ovum, without the process of fertilisation transforms into a new individual. Rotifers, some molluscs, arthropods, etc. take up parthenogenesis as a natural form of reproduction..

i) It ensures food supply and availability of a mate for sexual reproduction. ii) It provides privacy for complex reproductive cycles and reduces the chances of over exploitation of natural resources. iii) It helps in population control, as many individuals fail to ge..